Estheria (crustacean)
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''Lioestheria'' is an extinct genus of
clam shrimp Clam shrimp are a group of bivalved branchiopod crustaceans that resemble the unrelated bivalved molluscs. They are extant and also known from the fossil record, from at least the Devonian period and perhaps before. They were originally classif ...
that thrived from the
Carboniferous The Carboniferous ( ) is a Geologic time scale, geologic period and System (stratigraphy), system of the Paleozoic era (geology), era that spans 60 million years, from the end of the Devonian Period Ma (million years ago) to the beginning of the ...
to the
Cretaceous The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ...
(360.7 to 99.7 Mya). They fed on detritus, being very small slow moving,
nekton Nekton or necton (from the ) is any aquatic organism that can actively and persistently propel itself through a water column (i.e. swimming) without touching the bottom. Nektons generally have powerful tails and appendages (e.g. fins, pleopods, ...
ic organisms that filter fed as they floated. They have been found in both marine and freshwater environments. First identified in 1912, they have been found in Germany, Hungary, Colorado,Lucas, S.G. and Kirkland, J.I., 1998. Preliminary report on conchostraca form the Upper Jurassic Morrison Formation, western United states. ''Modern Geology'', ''22'', p.415-422. New Mexico, Montana, Texas, Utah and China. There are two species: *'' Lioestheria monticula *'' Lioestheria carinacurvata''


References

Diplostraca Branchiopoda genera {{branchiopoda-stub